town, south central Sicily, Italy, just east of Agrigento city. The name of the town is believed to be of Arabic origin. It is the site of a late 13th-century castle, built by the Chiaramonte family, Sicilian nobles from the 11th–15th centuries. In a sulphur-mining and marble-quarrying district, its chief industry is the production of tanning extracts. Pop. (2006 est.) mun., 33,558.